Mechanical movement



G. MULLER.

MECHANICAL MOVEMENT.

APPLICATION FILED JUNE 6. 1919.

1 ,35954 1 6, Patented Nov. 16, 1920.

A TTORNE Y8 UNITED STATES PATENT OFFICE.

GEBHARD MI'JTLLER, on NEW YORK, N. Y.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented Nov. 16, 1920.

Application filed. June e, 1919. Serial no. 302,186.

. have invented a new and Improved Mechanical Movement, of which the following is a full, clear, and exact description.

The invention relates to rack and pinion feed mechanisms, and its object is to provide a new and improved mechanical movement more especially designed for converting reciprocating movement into intermittent rotary movement in an exceedingly simple and practically positive manner. Another object is to insure proper transmission of the power without danger of injury to the working parts, at the same time reducing wear and tear to a minimum.

lVith these and other objects in view, the invention consists of certain novel features of construction, as hereinafter shown and described and then specifically pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the mechanical movement with one of the covering flanges removed;

Fig. 2 is a cross section of the same on the line 2-2 of Fig. 1;

Fig. 3 is a side elevation of the mechanical movement with the parts in a different position and with part of the covering flange broken out;

Fig. 4 is a perspective view of the split clamping ring; and

Fig. 5 is a similar view of the key for spreading or releasing the clamping ring.

A reciprocating rack 10 is in mesh with a driving gear wheel 11 having a hub 12 mounted to turn on a stud 13 attached to the frame of the machine on which the mechanical movement is used for feeding or other purposes. On the hub 12 is keyed or otherwise secured a carrier 15, preferably in the form of a collar or a sleeve, on which is loosely fitted a split resilient clamping ring 16 on which is mounted to turn the inner surface 17 of a driven wheel 18 for intermittent feeding or similar purposes. The

clamping ring 16 is provided with a flattened or reduced portion 20 diametrically opposite the split ends 21 and 22, and between the said split ends 21 and 22 fits the outer end of a key 25 seated in a seat or recess 26 formed in the peripheral face of the carrier 15. The seat 26 has a cut-out portion 27 at the outer end of one of its walls, and the opposite wall is engaged near its-outer end by a set screw 30 screwing inthe key 25 approximately half way of its 7 length. The wheel 18, the key 25, the ring 1.6 and the carrier 15 are held between flanges a0 and 11, of which the flange 40 is preferably an integral part of the hub 12 while the flange 411s fastened by a screw 42 to the hub 12 to allow convenient removal of the flange ll for assembling or disassembling the parts held between the flanges 10 and 11.

The operation is as follows:

When the rack 10 moves in the direction of the arrow at, shown in Fig. 1, then the driving wheel 11 is rotated in the direction of the arrow 3 and in doing so the key 25 is carried along with the outer end of the key extending loosely between the ends 21 and 22, and as the key 25 is slightly out of radial alinement it carries the clamping ring 16 along without rotating the driven wheel 18. When the rack 10 moves inthe inverse direction of the arrow m then the driving wheel 11 is rotated in the direction 1 of the arrow 2 (see Fig. 3) and in doing so the key 25 is moved into an angular position whereby the outer end of'the key acts on the ends 21 and 22 of the clamping ring 16 thus spreading the ends apart and thereby clampingly engaging the clamping ring 16 with the inner surface 17 of the driven wheel 18 thereby rotating the same in the same direction in which the driving wheel 11 is rotated, as indicated by the arrow w in Fig. 3. It will be noticed that as the key 25 is mounted .on the peripheral portion of the carrier 15 and projects between the ends 21 and 22 of the clamping ring 16 considerable leverage is obtained to forcibly spread the ring 16 thereby insuring a firm connection between the clamping ring and the driven wheel 18 to rotate the latter in the same direction as the carrier 15 and the driving wheel 11 are rotated at the time. When the rack 10 again moves in the direction of the arrow at, the key 25 is immediately returned to its normal position thus relieving the pressure against the ends 21 and Q2 of the split clamping ring 16 there by permitting the latter. to. close up by. its own resiliency and thereby moving out of clamping contact with the inner surface 17 of the driven wheel 18. The latter thus comes to a standstill and remains in this position and the rack 10 moves in the inverse direction of the arrow at. It will be noticed that by the arrangement described the clamping ring 16 provides a support for the driven wheel 18, and the said ring.

readily turns in the driven wheel 18 when the latter is at a standstill and the rack 10 moves in the direction otthe arrow a2.

t is understood that the screw 30 forms a fulcrum for the key 25 to swing upon when turning the carrier 15 in the direction of thearrow a to spread the clamping ring 181 01. clamping engagement with the driven wheel 18, as above explained. From the foregoing it will be seen that by the ar rangement described a practically positive gripping of the wheel to be driven is had. by the use of the split clamping ring 16, and the driven wheel 18 is instantly released on the return movement of the rack 10.

By the construction shown and described, the wear and tear oil: the working parts is reduced to a minimum and the parts are not liable to be injured should a heavy feeding resistance be encountered. In case of wear of the key 25 and the ends 21 and 22, a proper adjustment can be had by correspondingly adjusting the set screw 30.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent v H 1. A mechanical movement for converting'reciprocating into intermittent rotary motion, comprising a driving wheel having a hub and rotated alternately in opposite directions, a collar on the hub of the driving wheel and having a peripheral recess, a split resilient clamping ring mounted on the collar, a driven wheel mounted to turn on the clamping ring, and a key loosely mounted in the recess of the collar and extending between the ends of the clamping ring.

2. A mechanical movement for converting reciprocating movement into intermitr tent rotary motion, comprising a driving wheel rotated alternately in opposite directions, a driven wheel adapted to be driven in one direction only, a carrier rotating with the said driving wheel and provided with a recess-having a cut-out portion at the outer end of one of its walls, a gravity operated key helc in the said recess and projecting beyond the said carrier, said key having a member projecting from onel'ace into engagement with the wall of the recess opposite that having the cut-out portion and a split resilient clamping ring fitting onto the said driven wheel, the said key extending between the ends of the said clamping ring.

3. A mechanical movement for convert reciprocating movement into intermittent rotary motion, comprising a driving wheel rotated alternately in opposite directions, a carrier rotating with the said driving wheel and provided with a peripheral recess, a split clamping ring fitting loosely on the said carrier, a driven. wheel mounted to turn on the said split ring, a gravity operated key mounted in the said recess and projecting between the ends of the said split clamping ring, and a set screw provided in the said key adapted to abut against one wall of. the said recess, the said set screw forming a ,itulcrum for the said key. 7 GEBHARD MULLER. 

